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van Stokkum IHM, Kloz M, Polli D, Viola D, Weißenborn J, Peerbooms E, Cerullo G, Kennis JTM. Vibronic dynamics resolved by global and target analysis of ultrafast transient absorption spectra. J Chem Phys 2021; 155:114113. [PMID: 34551543 DOI: 10.1063/5.0060672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a methodology that provides a complete parametric description of the time evolution of the electronically and vibrationally excited states as detected by ultrafast transient absorption (TA). Differently from previous approaches, which started fitting the data after ≈100 fs, no data are left out in our methodology, and the "coherent artifact" and the instrument response function are fully taken into account. In case studies, the method is applied to solvents, the dye Nile blue, and all-trans β-carotene in cyclohexane solution. The estimated Damped Oscillation Associated Spectra (DOAS) and phases express the most important vibrational frequencies present in the molecular system. By global fit alone of the experimental data, it is difficult to interpret in detail the underlying dynamics. Since it is unfeasible to directly fit the data by a theoretical simulation, our enhanced DOAS methodology thus provides a useful "middle ground" where the theoretical description and the fit of the experimental data can meet. β-carotene in cyclohexane was complementarily studied with femtosecond stimulated Raman spectroscopy (FSRS). The fs-ps dynamics of β-carotene in cyclohexane in TA and FSRS experiments can be described by a sequential scheme S2 → hot S1 → S1' → S1 → S0 with lifetimes of 167 fs (fixed), 0.35, 1.1, and 9.6 ps. The correspondence of DOAS decaying concomitantly with hot S1 and the Species Associated Difference Spectra of hot S1 in TA and FSRS suggest that we observe here features of the vibrational relaxation and nuclear reorganization responsible for the hot S1 to S1 transition.
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Affiliation(s)
- Ivo H M van Stokkum
- Department of Physics and Astronomy and LaserLaB, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Miroslav Kloz
- Institute of Physics, ELI Beamlines, Academy of Sciences of the Czech Republic, CZ-18221 Prague, Czech Republic
| | - Dario Polli
- IFN-CNR, Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Daniele Viola
- IFN-CNR, Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Jörn Weißenborn
- Department of Physics and Astronomy and LaserLaB, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Ebo Peerbooms
- Department of Physics and Astronomy and LaserLaB, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Giulio Cerullo
- IFN-CNR, Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - John T M Kennis
- Department of Physics and Astronomy and LaserLaB, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
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Gorbunova IA, Sasin ME, Beltukov YM, Semenov AA, Vasyutinskii OS. Anisotropic relaxation in NADH excited states studied by polarization-modulation pump-probe transient spectroscopy. Phys Chem Chem Phys 2020; 22:18155-18168. [PMID: 32766648 DOI: 10.1039/d0cp02496a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We present the results of experimental and theoretical studies of fast anisotropic relaxation and rotational diffusion in the first electron excited state of biological coenzyme NADH in water-ethanol solutions. The experiments have been carried out by means of a novel polarization-modulation transient method and fluorescence polarization spectroscopy. For interpretation of the experimental results a model of the anisotropic relaxation in terms of scalar and vector properties of transition dipole moments has been developed based on the Born-Oppenheimer approximation. This model allows for the description of fast isotropic and anisotropic excited state relaxation under excitation of molecules by ultrafast laser pulses in transient absorption and upconversion experiments. The results obtained suggest that the dynamics of anisotropic rovibronic relaxation in NADH under excitation with 100 fs pump laser pulses can be characterised by a single vibrational relaxation time τv lying in the range of 2-15 ps and a single rotation diffusion time τr lying in the range of 100-450 ps, both depending on ethanol concentration. The dependence of the times τv and τr on the solution polarity (static permittivity) and viscosity has been determined and analyzed. Limiting values of the term P2(cos θ) describing the rotation of the transition dipole moment in the course of vibrational relaxation have been determined from experiments as a function of ethanol concentration and analyzed.
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Affiliation(s)
| | - Maxim E Sasin
- Ioffe Institute, Polytekhnicheskaya 26, St. Petersburg, Russia.
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Rathbone HW, Davis JA, Michie KA, Goodchild SC, Robertson NO, Curmi PMG. Coherent phenomena in photosynthetic light harvesting: part two-observations in biological systems. Biophys Rev 2018; 10:1443-1463. [PMID: 30242555 PMCID: PMC6233342 DOI: 10.1007/s12551-018-0456-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 09/06/2018] [Indexed: 10/28/2022] Open
Abstract
Considerable debate surrounds the question of whether or not quantum mechanics plays a significant, non-trivial role in photosynthetic light harvesting. Many have proposed that quantum superpositions and/or quantum transport phenomena may be responsible for the efficiency and robustness of energy transport present in biological systems. The critical experimental observations comprise the observation of coherent oscillations or "quantum beats" via femtosecond laser spectroscopy, which have been observed in many different light harvesting systems. Part Two of this review aims to provide an overview of experimental observations of energy transfer in the most studied light harvesting systems. Length scales, derived from crystallographic studies, are combined with energy and time scales of the beats observed via spectroscopy. A consensus is emerging that most long-lived (hundreds of femtoseconds) coherent phenomena are of vibrational or vibronic origin, where the latter may result in coherent excitation transport within a protein complex. In contrast, energy transport between proteins is likely to be incoherent in nature. The question of whether evolution has selected for these non-trivial quantum phenomena may be an unanswerable question, as dense packings of chromophores will lead to strong coupling and hence non-trivial quantum phenomena. As such, one cannot discern whether evolution has optimised light harvesting systems for high chromophore density or for the ensuing quantum effects as these are inextricably linked and cannot be switched off.
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Affiliation(s)
- Harry W Rathbone
- School of Physics, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Jeffery A Davis
- Centre for Quantum and Optical Science, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia
| | - Katharine A Michie
- School of Physics, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Sophia C Goodchild
- Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Neil O Robertson
- School of Physics, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Paul M G Curmi
- School of Physics, The University of New South Wales, Sydney, New South Wales, 2052, Australia.
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4
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Jumper CC, van Stokkum IHM, Mirkovic T, Scholes GD. Vibronic Wavepackets and Energy Transfer in Cryptophyte Light-Harvesting Complexes. J Phys Chem B 2018; 122:6328-6340. [PMID: 29847127 DOI: 10.1021/acs.jpcb.8b02629] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Determining the key features of high-efficiency photosynthetic energy transfer remains an ongoing task. Recently, there has been evidence for the role of vibronic coherence in linking donor and acceptor states to redistribute oscillator strength for enhanced energy transfer. To gain further insights into the interplay between vibronic wavepackets and energy-transfer dynamics, we systematically compare four structurally related phycobiliproteins from cryptophyte algae by broad-band pump-probe spectroscopy and extend a parametric model based on global analysis to include vibrational wavepacket characterization. The four phycobiliproteins isolated from cryptophyte algae are two "open" structures and two "closed" structures. The closed structures exhibit strong exciton coupling in the central dimer. The dominant energy-transfer pathway occurs on the subpicosecond timescale across the largest energy gap in each of the proteins, from central to peripheral chromophores. All proteins exhibit a strong 1585 cm-1 coherent oscillation whose relative amplitude, a measure of vibronic intensity borrowing from resonance between donor and acceptor states, scales with both energy-transfer rates and damping rates. Central exciton splitting may aid in bringing the vibronically linked donor and acceptor states into better resonance resulting in the observed doubled rate in the closed structures. Several excited-state vibrational wavepackets persist on timescales relevant to energy transfer, highlighting the importance of further investigation of the interplay between electronic coupling and nuclear degrees of freedom in studies on high-efficiency photosynthesis.
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Affiliation(s)
- Chanelle C Jumper
- Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada.,Department of Chemistry , Princeton University , Washington Road , Princeton , New Jersey 08544 , United States
| | - Ivo H M van Stokkum
- LaserLaB, Department of Physics and Astronomy , Vrije Universiteit Amsterdam , De Boelelaan 1081 , 1081 HV Amsterdam , The Netherlands
| | - Tihana Mirkovic
- Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada
| | - Gregory D Scholes
- Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada.,Department of Chemistry , Princeton University , Washington Road , Princeton , New Jersey 08544 , United States
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van Stokkum IHM, Jumper CC, Snellenburg JJ, Scholes GD, van Grondelle R, Malý P. Estimation of damped oscillation associated spectra from ultrafast transient absorption spectra. J Chem Phys 2017; 145:174201. [PMID: 27825230 DOI: 10.1063/1.4966196] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
When exciting a complex molecular system with a short optical pulse, all chromophores present in the system can be excited. The resulting superposition of electronically and vibrationally excited states evolves in time, which is monitored with transient absorption spectroscopy. We present a methodology to resolve simultaneously the contributions of the different electronically and vibrationally excited states from the complete data. The evolution of the excited states is described with a superposition of damped oscillations. The amplitude of a damped oscillation cos(ωnt)exp(-γnt) as a function of the detection wavelength constitutes a damped oscillation associated spectrum DOASn(λ) with an accompanying phase characteristic φn(λ). In a case study, the cryptophyte photosynthetic antenna complex PC612 which contains eight bilin chromophores was excited by a broadband optical pulse. Difference absorption spectra from 525 to 715 nm were measured until 1 ns. The population dynamics is described by four lifetimes, with interchromophore equilibration in 0.8 and 7.5 ps. We have resolved 24 DOAS with frequencies between 130 and 1649 cm-1 and with damping rates between 0.9 and 12 ps-1. In addition, 11 more DOAS with faster damping rates were necessary to describe the "coherent artefact." The DOAS contains both ground and excited state features. Their interpretation is aided by DOAS analysis of simulated transient absorption signals resulting from stimulated emission and ground state bleach.
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Affiliation(s)
- Ivo H M van Stokkum
- Institute for Lasers, Life and Biophotonics, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Chanelle C Jumper
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Joris J Snellenburg
- Institute for Lasers, Life and Biophotonics, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Gregory D Scholes
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
| | - Rienk van Grondelle
- Institute for Lasers, Life and Biophotonics, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Pavel Malý
- Institute for Lasers, Life and Biophotonics, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
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Kosumi D, Nakagawa K, Sakai S, Nagaoka Y, Maruta S, Sugisaki M, Dewa T, Nango M, Hashimoto H. Ultrafast intramolecular relaxation dynamics of Mg- and Zn-bacteriochlorophyll a. J Chem Phys 2014; 139:034311. [PMID: 23883031 DOI: 10.1063/1.4813526] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ultrafast excited-state dynamics of the photosynthetic pigment (Mg-)bacteriochlorophyll a and its Zn-substituted form were investigated by steady-state absorption∕fluorescence and femtosecond pump-probe spectroscopic measurements. The obtained steady-state absorption and fluorescence spectra of bacteriochlorophyll a in solution showed that the central metal compound significantly affects the energy of the Qx state, but has almost no effect on the Qy state. Photo-induced absorption spectra were recorded upon excitation of Mg- and Zn-bacteriochlorophyll a into either their Qx or Qy state. By comparing the kinetic traces of transient absorption, ground-state beaching, and stimulated emission after excitation to the Qx or Qy state, we showed that the Qx state was substantially incorporated in the ultrafast excited-state dynamics of bacteriochlorophyll a. Based on these observations, the lifetime of the Qx state was determined to be 50 and 70 fs for Mg- and Zn-bacteriochlorophyll a, respectively, indicating that the lifetime was influenced by the central metal atom due to the change of the energy gap between the Qx and Qy states.
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Affiliation(s)
- Daisuke Kosumi
- The Osaka City University Advanced Research Institute for Natural Science and Technology, 3-3-138 Sugimoto, Osaka 558-8585, Japan.
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McClure SD, Turner DB, Arpin PC, Mirkovic T, Scholes GD. Coherent Oscillations in the PC577 Cryptophyte Antenna Occur in the Excited Electronic State. J Phys Chem B 2014; 118:1296-308. [DOI: 10.1021/jp411924c] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Scott D. McClure
- Department of Chemistry and
Centre for Quantum Information and Quantum Control, 80 Saint George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Daniel B. Turner
- Department of Chemistry and
Centre for Quantum Information and Quantum Control, 80 Saint George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Paul C. Arpin
- Department of Chemistry and
Centre for Quantum Information and Quantum Control, 80 Saint George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Tihana Mirkovic
- Department of Chemistry and
Centre for Quantum Information and Quantum Control, 80 Saint George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Gregory D. Scholes
- Department of Chemistry and
Centre for Quantum Information and Quantum Control, 80 Saint George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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Ferretti M, Novoderezhkin VI, Romero E, Augulis R, Pandit A, Zigmantas D, Grondelle RV. The nature of coherences in the B820 bacteriochlorophyll dimer revealed by two-dimensional electronic spectroscopy. Phys Chem Chem Phys 2014; 16:9930-9. [DOI: 10.1039/c3cp54634a] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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9
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Nakamura R, Hamada N, Ichida H, Tokunaga F, Kanematsu Y. Coherent oscillations in ultrafast fluorescence of photoactive yellow protein. J Chem Phys 2008; 127:215102. [PMID: 18067379 DOI: 10.1063/1.2802297] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The ultrafast photoinduced dynamics of photoactive yellow protein in aqueous solution were studied at room temperature by femtosecond fluorescence spectroscopy using an optical Kerr-gate technique. Coherent oscillations of the wave packet were directly observed in the two-dimensional time-energy map of ultrafast fluorescence with 180 fs time resolution and 5 nm spectral resolution. The two-dimensional map revealed that four or more oscillatory components exist within the broad bandwidth of the fluorescence spectrum, each of which is restricted in the respective narrow spectral region. Typical frequencies of the oscillatory modes are 50 and 120 cm(-1). In the landscape on the map, the oscillatory components were recognized as the ridges which were winding and descending with time. The amplitude of the oscillatory and winding behaviors is a few hundred cm(-1), which is the same order as the frequencies of the oscillations. The mean spectral positions of the oscillatory components in the two-dimensional map are well explained by considering the vibrational energies of intramolecular modes in the electronic ground state of the chromophore. The entire view of the wave packet oscillations and broadening in the electronic excited state, accompanied by fluorescence transitions to the vibrational sublevels belonging to the electronic ground state, was obtained.
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Affiliation(s)
- Ryosuke Nakamura
- JST-CREST, Venture Business Laboratory, Center for Advanced Science and Innovation, Osaka University, Suita, Osaka 565-0871, Japan.
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10
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Shelly KR, Golovich EC, Dillman KL, Beck WF. Intermolecular Vibrational Coherence in the Bacteriochlorophyll Proteins B777 and B820 from Rhodospirillum rubrum. J Phys Chem B 2008; 112:1299-307. [DOI: 10.1021/jp077103p] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Katherine R. Shelly
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
| | | | - Kevin L. Dillman
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
| | - Warren F. Beck
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
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11
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Carson EA, Diffey WM, Shelly KR, Lampa-Pastirk S, Dillman KL, Schleicher JM, Beck WF. Dynamic-Absorption Spectral Contours: Vibrational Phase-Dependent Resolution of Low-Frequency Coherent Wave-Packet Motion of IR144 on the Ground-State and Excited-State π → π* Surfaces. J Phys Chem A 2004. [DOI: 10.1021/jp035176c] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elizabeth A. Carson
- Department of Chemistry, Michigan State University, 3 Chemistry Building, East Lansing, Michigan 48824
| | - William M. Diffey
- Department of Chemistry, Michigan State University, 3 Chemistry Building, East Lansing, Michigan 48824
| | - Katherine R. Shelly
- Department of Chemistry, Michigan State University, 3 Chemistry Building, East Lansing, Michigan 48824
| | - Sanela Lampa-Pastirk
- Department of Chemistry, Michigan State University, 3 Chemistry Building, East Lansing, Michigan 48824
| | - Kevin L. Dillman
- Department of Chemistry, Michigan State University, 3 Chemistry Building, East Lansing, Michigan 48824
| | - James M. Schleicher
- Department of Chemistry, Michigan State University, 3 Chemistry Building, East Lansing, Michigan 48824
| | - Warren F. Beck
- Department of Chemistry, Michigan State University, 3 Chemistry Building, East Lansing, Michigan 48824
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12
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Mao L, Wang Y, Hu X. π−π Stacking Interactions in the Peridinin−Chlorophyll−Protein ofAmphidiniumcarterae. J Phys Chem B 2003. [DOI: 10.1021/jp0276496] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Renger T, Marcus RA. On the relation of protein dynamics and exciton relaxation in pigment–protein complexes: An estimation of the spectral density and a theory for the calculation of optical spectra. J Chem Phys 2002. [DOI: 10.1063/1.1470200] [Citation(s) in RCA: 276] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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14
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Marin TW, Homoelle BJ, Spears KG, Hupp JT, Spreer LO. Vibrational Coherence Due to Promoting Mode Activity in the Relaxation Dynamics of the Class III Mixed-Valence Molecule [Ru2TIEDCl4]+. J Phys Chem A 2002. [DOI: 10.1021/jp0124490] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Timothy W. Marin
- Northwestern University Department of Chemistry, Evanston, Illinois 60208
| | | | - Kenneth G. Spears
- Northwestern University Department of Chemistry, Evanston, Illinois 60208
| | - Joseph T. Hupp
- Northwestern University Department of Chemistry, Evanston, Illinois 60208
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Martinsson P, Sundström V, Akesson E. An ultrafast time-resolved anisotropy study of bacteriochlorophyll a in pyridine. FEBS Lett 2000; 465:107-9. [PMID: 10631314 DOI: 10.1016/s0014-5793(99)01725-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The transient absorption anisotropy spectrum of bacteriochlorophyll a (BChl a) in pyridine was measured in the wavelength interval 550-850 nm, 1 ps after optical excitation with a 792-nm femtosecond light pulse. In the wavelength region of Q(y) absorption and stimulated emission (775-825 nm), the anisotropy was found to be close to the theoretically expected value (0.4) for a two-level system. In the wavelength region 650-750 nm, where the transient absorption signal is dominated by excited state absorption, the anisotropy is reduced to approximately 0.18. Anisotropy kinetics were measured at several wavelengths and found to be constant within the time window 0-5 ps, showing that no internal dynamics of the BChl a molecule change the anisotropy on the time scale of tens of picoseconds.
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Affiliation(s)
- P Martinsson
- Department of Chemical Physics, Lund University, P.O. Box 124, S-22100, Lund, Sweden
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Iida K, Ohya N, Kashiwada A, Mimuro M, Nango M. Characterization of the Light-Harvesting Polypeptide/BacteriochlorophyllaComplex Isolated from Photosynthetic Bacteria by the Linear Dichroism Spectra. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2000. [DOI: 10.1246/bcsj.73.221] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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Creemers TMH, De Caro CA, Visschers RW, van Grondelle R, Völker S. Spectral Hole Burning and Fluorescence Line Narrowing in Subunits of the Light-Harvesting Complex LH1 of Purple Bacteria. J Phys Chem B 1999. [DOI: 10.1021/jp990805x] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- T. M. H. Creemers
- Center for the Study of Excited States of Molecules, Huygens and Gorlaeus Laboratories, University of Leiden, 2300 RA Leiden, The Netherlands, Department of Biomolecular Structure and Dynamics, Faculty of Biology, Free University, 1081 HV Amsterdam, The Netherlands, and Department of Biophysics, Faculty of Exact Sciences, Free University, 1081 HV Amsterdam, The Netherlands
| | - C. A. De Caro
- Center for the Study of Excited States of Molecules, Huygens and Gorlaeus Laboratories, University of Leiden, 2300 RA Leiden, The Netherlands, Department of Biomolecular Structure and Dynamics, Faculty of Biology, Free University, 1081 HV Amsterdam, The Netherlands, and Department of Biophysics, Faculty of Exact Sciences, Free University, 1081 HV Amsterdam, The Netherlands
| | - R. W. Visschers
- Center for the Study of Excited States of Molecules, Huygens and Gorlaeus Laboratories, University of Leiden, 2300 RA Leiden, The Netherlands, Department of Biomolecular Structure and Dynamics, Faculty of Biology, Free University, 1081 HV Amsterdam, The Netherlands, and Department of Biophysics, Faculty of Exact Sciences, Free University, 1081 HV Amsterdam, The Netherlands
| | - R. van Grondelle
- Center for the Study of Excited States of Molecules, Huygens and Gorlaeus Laboratories, University of Leiden, 2300 RA Leiden, The Netherlands, Department of Biomolecular Structure and Dynamics, Faculty of Biology, Free University, 1081 HV Amsterdam, The Netherlands, and Department of Biophysics, Faculty of Exact Sciences, Free University, 1081 HV Amsterdam, The Netherlands
| | - S. Völker
- Center for the Study of Excited States of Molecules, Huygens and Gorlaeus Laboratories, University of Leiden, 2300 RA Leiden, The Netherlands, Department of Biomolecular Structure and Dynamics, Faculty of Biology, Free University, 1081 HV Amsterdam, The Netherlands, and Department of Biophysics, Faculty of Exact Sciences, Free University, 1081 HV Amsterdam, The Netherlands
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Larive CK, Lunte SM, Zhong M, Perkins MD, Wilson GS, Gokulrangan G, Williams T, Afroz F, Schöneich C, Derrick TS, Middaugh CR, Bogdanowich-Knipp S. Separation and analysis of peptides and proteins. Anal Chem 1999; 71:389R-423R. [PMID: 10409086 DOI: 10.1021/a1990013o] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C K Larive
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045
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Affiliation(s)
- M H Vos
- INSERM U451, Laboratoire d'Optique Appliquée, Ecole Polytechnique-ENSTA, 91761, Palaiseau Cedex, France.
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Sundström V, Pullerits T, van Grondelle R. Photosynthetic Light-Harvesting: Reconciling Dynamics and Structure of Purple Bacterial LH2 Reveals Function of Photosynthetic Unit. J Phys Chem B 1999. [DOI: 10.1021/jp983722+] [Citation(s) in RCA: 672] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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